Looks like I hit a nerve on this one. But I suspect price has a lot to do with it:
Cheap. That's what it's all about. Airlines buy aeroplanes on the recommendation of accountants before they pay attention to pilots.
I never suggested the 777 was inferior to the 330/340 series.
By the way, check sales stats for this year or, for that matter, the last two years for the respective models and throw in the 747, if you like.